Ginkgolide is one of the important secondary metabolites of Ginkgo biloba. The synthesis of plant secondary metabolites is influenced by exogenous phytohormones. In this study, ten-year-old ginkgo grafted seedlings were used as the test material, and the effects of 0, 2, 4, 6, 8, and 10 mmol L-1 gibberellin (GA(3)) on endogenous indole acetic acid (IAA), abscisic acid (ABA), GA(3), and ginkgolide contents in ginkgo leaves were investigated. Results showed that exogenous GA(3) treatment inhibited endogenous GA(3), changed the contents of endogenous IAA and ABA in ginkgo leaves, and affected the...
